2021 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 22,860 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 22,860 miles, around 20,700 fewer miles than is typical for its age. The AskCar estimate for this car is £20,098. It is priced at £20,267, which is £169 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. Since we first spotted the advert 26 days ago, the asking price has dropped by £633. Its advertised mileage matches the government's MOT record. The seller is Vindis Group Cambridge Audi, based in Cambridge. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £169 (under 1%) over the AskCar estimate of £20,098.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 6,542 priced Audi A3 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £18,000: the median of the 191 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A3 has been on sale for at least 26 days.

Price history

AskCar first saw this advert on 7 October 2026 at £20,900. Its asking price is now £20,267, £633 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 7 October 2026: £20,900
• 8 October 2026: £20,554
• 9 October 2026: £20,455
• 10 October 2026: £20,523
• 11 October 2026: £20,424
• 13 October 2026: £20,309
• 14 October 2026: £20,310
• 15 October 2026: £20,305
• 16 October 2026: £20,295
• 17 October 2026: £20,196
• 21 October 2026: £20,291
• 22 October 2026: £20,285
• 23 October 2026: £20,262
• 24 October 2026: £20,367
• 26 October 2026: £20,268
• 27 October 2026: £20,376
• 29 October 2026: £20,267

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 8 March 2027.

It has had 3 MOTs. The latest, on 9 February 2026, passed.

Advisories at the latest test: nearside rear nail in tyre.

Mileage at that test: 21,919 miles, which matches the advertised 22,860 miles.

Advertised mileage is about 20,700 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

49 other 2021 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £11,990 to £21,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 23,100 miles. Price: £19,800, £467 less than this car. Dealer: Walters Motor Group - Loddon in Norwich. AskCar page: https://askcar.co.uk/car/audi-a3-2021-086787b0735c
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 22,443 miles. Price: £19,449, £818 less than this car. Dealer: Motorpoint Widnes in Widnes. AskCar page: https://askcar.co.uk/car/audi-a3-2021-9770c3319a01
• 2021 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 22,000 miles. Price: £21,995, £1,728 more than this car. Dealer: AM Autohaus in Slough. AskCar page: https://askcar.co.uk/car/audi-a3-2021-58a7db9d6038

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, grey, 29 miles from this car. Mileage: 32,574 miles. Price: £20,330, £63 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/audi-a3-2021-86742b42df02